MAP Fertilizer 11-52-0 / 12-61-0

Monoammonium phosphate, granular & fully water-soluble

MAP comes in two products that share a name and little else commercially. Granular MAP 11-52-0 (some plants run 10-50-0 or 11-55-0) is a field fertilizer sold in bulk and 50 kg bags on the same numbers as DAP: nitrogen, available and water-soluble P₂O₅, moisture at 1.5% maximum and granule size 2–4 mm; its point of difference is a lower pH of about 4–4.5 against DAP's 7.5–8, which keeps phosphate available in alkaline soils and makes it the safer component in blends with ammonium-sensitive material. Technical or water-soluble MAP 12-61-0 is a crystalline, fully soluble product for fertigation, drip irrigation and foliar feeding, specified on solubility, insolubles below 0.1%, and freedom from chloride and heavy metals; it sells in 25 kg bags at a multiple of the granular price and is a different supply chain, from a different set of producers.

Buy granular MAP over DAP when the soil is alkaline or calcareous, when the blend includes ammonium nitrate or urea where DAP's free ammonia causes losses, and when the extra units of P₂O₅ per tonne justify the price; it is the standard starter phosphate in much of Australia, Brazil and the US. Buy water-soluble MAP for greenhouse, orchard and high-value drip-irrigated crops where the whole dose has to dissolve without residue. The bulk trade moves from Morocco, Russia, China and the US in Handysize and Supramax parcels, the soluble grade in containers from China and Europe. CBIL brokers both against independent certification of N, P₂O₅, solubility, moisture and size at load, in bulk, 50 kg and 25 kg bags and jumbo bags, on FOB, CFR and CIF terms.